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Q.

Is it true that the strength of the magnetic field produced around a straight wire carrying current increases with an increase in the strength of the current?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is true.
When a wire carries current, a magnetic field is produced around the wire due to electromagnetic induction. This magnetic field is directly proportional to the strength of the current flowing through the wire. Hence, the strength of the magnetic field increases when the current flowing through the wire increases.
 
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Is it true that the strength of the magnetic field produced around a straight wire carrying current increases with an increase in the strength of the current?